Lazy Sequentialization Tool for Unbounded C Programs
Explore the Unbounded Lazy-CSeq tool for sequentializing C programs with unbounded context switches, reducing concurrent program analysis to sequential analysis, supporting dynamic thread creation and loop preservation while providing correctness proofs.
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Presentation Transcript
Unbounded Lazy-CSeq A Lazy Sequentialization Tool for C Programs with Unbounded Context Switches Truc Lam Nguyen University of Southampton, UK Bernd Fischer Stellenbosch University, South Africa Gennaro Parlato University of Southampton, UK Salvatore La Torre University of Salerno, Italy
problem: analysis of concurrent program approach: reduction to sequential analysis inlining, loop preserving ,... Predicate Abstraction Tool Unbounded Lazy-Cseq P P Unbounded context switches CPAChecker concurrent C program sequential C program P equivalent to P
Overview Threads thread function t1(){...} GUARD S1; GUARD S2; thread function tn(){...} Simulation function while (true) { t1(); tn(); } GUARD Sm; T1 Tn Main driver
Features Support dynamic thread creation with o bounded number of threads o explicit context switch points in thread Support unbounded number of context switches Preserve (in)finite loops Can provide actual correctness proof
Thank you! users.ecs.soton.ac.uk/gp4/cseq
